My apologies if this has been covered before, but has anyone got a problem with toothpaste while pregnant?

I have to be really quick while brushing or else I gag, and then when I'm finished I spend the next little while in the toilet dry retching (and occasionally vomiting - I am a very rare chucker!)

Has anyone had this problem and if so have you found a toothpaste that makes you less gaggy? I am 16 + weeks and have no morning sickness other than this.

Thanks